Article
Materials Science, Coatings & Films
Fangfang Zeng, Lianchang Qiu, Shan He, Liying Wu, Jifei Zhu, Kai Li, Huixin Liu, Yong Du
Summary: Transition metal nitrides and diborides have high melting points, excellent chemical stability, and good thermal conductivity, but oxidation is a common issue in high-temperature environments. In this study, single layer TiB1.73, Al0.59Ti0.41N, and bilayer TiB1.73/Al0.59Ti0.41N coatings were deposited on cemented carbide inserts using the HiPIMS method, and their oxidation behavior and phase transition were investigated through experiments and phase diagram calculations.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Christina Kainz, Nina Schalk, Christian Saringer, Christoph Czettl
Summary: The oxidation mechanisms of chemical vapor deposited TiN, Ti(C,N) and TiC coatings were studied, revealing that TiN has the highest oxidation onset temperature. Ti(C,N) and TiC form rutile and anatase during oxidation, with Ti(C,N) displaying the highest oxidation end temperature and TiC exhibiting the lowest oxidation onset and end temperature due to lower Gibbs free energy and smaller domain size compared to TiN.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Energy & Fuels
Rashmitha Keshav, M. G. Mahesha
Summary: This paper focuses on enhancing the performance of CdS/CdTe solar cells by replacing CdS with a ZnS/CdS bilayer window. The study shows that the ZnS/CdS bilayer window offers higher fill factor and conversion efficiency, leading to better overall performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Ziyi Chen, Andrew G. Walsh, Xiao Wei, Manzhou Zhu, Peng Zhang
Summary: This study investigates the electronic properties of Ag-25(SR)(18) and Au-25(SR)(18) and develops a unique method to analyze the charge transfer behavior of nanoclusters. Experimental X-ray spectroscopy is used to demonstrate the bonding properties of silver nanoclusters, with the staple motif shown to have a significant impact on their electronic properties. The effective X-ray analysis techniques developed here provide new opportunities for the site-specific study of other nanoclusters.
Article
Green & Sustainable Science & Technology
Yudi Wu, Lin Qi, Gang Chen
Summary: This study investigates the enhanced adsorption of perfluorooctane acid (PFOA) by engineered biochar. The biochar derived from biosolid shows better PFOA adsorption due to its higher oxygen and sulfur contents, as well as higher metal contents. Additives like FeCl3 and carbon nanotube were used to enhance the adsorption capacity. The results show that Fe-engineered biochar significantly improves PFOA adsorption, making it promising for PFOA removal during wastewater treatment processes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Ceramics
Zexing Wang, Yunfeng Guo, Jiamao Li
Summary: In this paper, a series of Li2Zn[Ti1-x(Co1/3Nb2/3)x]3O8 ceramics were prepared via the conventional solid-state method. The influences of (Co1/3Nb2/3)4+ complex ions on the phase composition, spectral characteristics, microstructure, and microwave dielectric properties of Li2Zn[Ti1-x(Co1/3Nb2/3)x]3O8 ceramics were systematically studied. The study found that the presence of (Co1/3Nb2/3)4+ content affected the structure, performance, and microwave dielectric properties of Li2Zn[Ti1-x(Co1/3Nb2/3)x]3O8 ceramics.
CERAMICS INTERNATIONAL
(2023)
Article
Environmental Sciences
Yueh-Feng Li, Ching-Yao Hu, Yu-Chi Lee, Shang-Lien Lo
Summary: This study found that adding ZnCl2 can increase the efficiency of EC for PFOA, and the longer the carbon chain of PFA, the better the removal by EC. Chemical bonding between aluminum and fluoride was observed. The main functions of ZnCl2 were to prevent the rise in pH and improve flotation.
Article
Chemistry, Physical
Shasha Tao, Qingbo Wen, Wolfram Jaegermann, Bernhard Kaiser
Summary: Electrodeposited alpha-Ni(OH)(2) thin films on Ti substrates were studied as cost-effective electrocatalysts for water-splitting devices. Annealing the films at 150 degrees C for 1 h significantly enhances their electrocatalytic activity for the oxygen evolution reaction. The induced structural evolution of alpha-Ni(OH)(2) improves electrical conductivity and accelerates the generation of active sites, resulting in improved activity and stability.
Article
Chemistry, Multidisciplinary
Cesar D. D. Mendoza, F. L. Freire Jr
Summary: We investigated the interfacial electronic structure of single-layer graphene on a germanium substrate using UPS and XPS. The graphene was directly synthesized on (110) undoped Ge substrate via CVD. The study identified the main graphitic properties and showed that the Ge substrate affected the electronic structure of the graphene due to electronic coupling. The study also provided important information on the Schottky contact's nature and energy level alignments for potential integration of single-layer graphene on a Ge substrate with CMOS technology.
Article
Materials Science, Multidisciplinary
Yann Morizet, Valentin Jolivet, Nicolas Trcera, Tomo Suzuki-Muresan, Jonathan Hamon
Summary: The study investigated the possibility of dissolving iodine in borosilicate glasses using high-pressure synthesis, finding that I predominantly dissolves as iodide and using XPS and XAS methods to determine the speciation and surroundings of I. The results suggest that the borosilicate network is affected by the dissolution of I.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Chemistry, Physical
Ahmed Aliyu, Chandan Srivastava
Summary: The study found that the corrosion resistance of Cr-containing AlCrNiCoFeCu HEA coating is higher than that of AlNiCoFeCu HEA coating in salt solution, mainly due to the formation of metallic oxides film over the coating surface.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Aishwarya Srinath, Kristina von Fieandt, Rebecka Lindblad, Stefan Fritze, Markus Korvela, Jean Petersson, Erik Lewin, Leif Nyholm
Summary: The study found that the corrosion resistance of AlCrNbYZrN films is not determined by the nitrogen content, but by the nitrogen-induced porosity. Samples with higher nitrogen content are denser and have better corrosion resistance, while samples with lower nitrogen content are more porous and have poorer corrosion resistance.
Article
Materials Science, Multidisciplinary
Holly M. Johnson, Jesse M. Brown, Anna M. Zaniewski, Robert J. Nemanich
Summary: TiC formation at the diamond-titanium interface is inhibited by oxygen termination, as confirmed by annealing experiments.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
J. W. Ben Li, Brendan J. Kennedy
Summary: Four honeycomb structured oxides Na3M2SbO6 (M = Co, Ni, C, Zn) were prepared and characterized. Na3Co2SbO6 showed the highest activity as a Hydrogen Evolution Catalyst (HEC), while Na3Ni2SbO6 was found to be inefficient. The rate of hydrogen evolution was not correlated with the measured bandgap.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Miranda Martinez, Anil R. R. Chourasia
Summary: The Ti/SnO2 interface was investigated using x-ray photoelectron spectroscopy. Chemical interaction between SnO2 and the titanium overlayer at the interface resulted in the reduction of SnO2 to elemental tin and the oxidation of the titanium overlayer. The interface consisted of elemental Sn, SnO2, elemental titanium, TiO2, and Ti-suboxide. Thermal diffusion of the titanium overlayer was observed in the 200 degrees C samples, leading to complete oxidation of the titanium.
Article
Chemistry, Physical
A. V. Dmitriev, E. V. Vladimirova, M. V. Kandaurov, D. G. Kellerman, M. V. Kuznetsov, L. U. Buldakova, R. F. Samigullina
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Chemistry, Physical
N. S. Kozhevnikova, E. S. Ulyanova, E. V. Shalaeva, T. I. Gorbunova, A. O. Bokunyaeva, A. S. Yushkov, L. Yu. Buldakova, M. Yu. Yanchenko, M. V. Kuznetsov, L. A. Pasechnik, A. N. Enyashin, A. S. Vorokh
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Correction
Chemistry, Physical
A. A. Ostroushko, L. V. Adamova, E. V. Koveza, O. V. Russkikh, M. V. Kuznetsov
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A
(2019)
Article
Physics, Condensed Matter
L. N. Maskaeva, E. A. Fedorova, V. F. Markov, M. V. Kuznetsov, O. A. Lipina
Article
Materials Science, Multidisciplinary
Dmitry Yu Usachov, Artem V. Tarasov, Fumihiko Matsui, Matthias Muntwiler, Kirill A. Bokai, Viktor O. Shevelev, Oleg Yu Vilkov, Mikhail V. Kuznetsov, Lada V. Yashina, Clemens Laubschat, Albano Cossaro, Luca Floreano, Alberto Verdini, Denis V. Vyalikh
Article
Chemistry, Physical
Ilya I. Ogorodnikov, Mikhail V. Kuznetsov, Fumihiko Matsui, Dmitry Yu. Usachov, Lada V. Yashina
APPLIED SURFACE SCIENCE
(2020)
Article
Materials Science, Multidisciplinary
Natalia S. Kozhevnikova, Larisa N. Maskaeva, Vyacheslav P. Markov, Olga A. Lipina, Alexandr U. Chufarov, Mikhail V. Kuznetsov
MATERIALS CHEMISTRY AND PHYSICS
(2020)
Article
Metallurgy & Metallurgical Engineering
V. G. Shevchenko, D. A. Eselevich, N. A. Popov, M. V. Kuznetsov, A. G. Merkushev
PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES
(2020)
Article
Electrochemistry
K. V. Nefedova, V. D. Zhuravlev, A. M. Murzakaev, V. V. Yagodin, M. V. Kuznetsov, E. Yu. Evshchik, V. M. Skachkov, O. V. Bushkova
Summary: The electrochemical behavior of lithium-ion battery positive electrode material LiNi1/3Mn1/3Co1/3O2 solid solution with surface protective layer of amorphous lithium borate has been studied. An optimal lithium borate content of 1 wt% has been found to enable stable cycling at 0.5C rate with maximum discharge capacity.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
D. G. Kellerman, M. O. Kalinkin, D. A. Akulov, R. M. Abashev, V. G. Zubkov, A. Surdo, N. Medvedeva, M. Kuznetsov
Summary: In this study, the optical properties of synthesized LiMgPO4: RE phosphates were examined using experimental and theoretical methods. It was found that different rare-earth dopants in the phosphates can affect the radioluminescence and thermoluminescence spectra, with an energy transfer model proposed to explain the phenomenon. The model was confirmed through photoluminescence in doped LiMgPO4 and ab initio calculations.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Engineering, Electrical & Electronic
G. G. Denisov, V. I. Malygin, A. I. Tsvetkov, A. G. Eremeev, M. Yu. Shmelev, V. I. Belousov, I. S. Baber, N. I. Karpov, I. I. Leonov, E. A. Kopelovich, M. M. Troitskiy, M. V. Kuznetsov, I. A. Varygin, K. A. Zhurin, B. Z. Movshevich, A. V. Chirkov, M. Yu. Glyavin, E. M. Tai, E. A. Soluyanova, M. I. Bakulin, I. N. Roy, I. O. Anashkin, P. P. Khvostenko, N. A. Kirneva
Summary: A unique T-15MD tokamak with a magnetic field of 2 T and an aspect ratio of 2.2 successfully developed and tested the first one of a series of microwave setups for electron-cyclotron plasma heating and current drive at megawatt power level. The experimental demonstration showed a power regime with parameters 1 MW/30 s/82.6 GHz with an efficiency of 57%.
RADIOPHYSICS AND QUANTUM ELECTRONICS
(2020)
Article
Physics, Condensed Matter
L. N. Maskaeva, V. F. Markov, A. V. Pozdin, V. I. Voronin, M. V. Kuznetsov, O. A. Lipina
PHYSICS OF THE SOLID STATE
(2020)
Article
Physics, Condensed Matter
A. V. Dmitriev, E. V. Vladimirova, A. P. Esaulkov, V. D. Zhuravlev, M. V. Kuznetsov, S. A. Uporov
PHYSICS OF THE SOLID STATE
(2020)
Article
Chemistry, Physical
Anna S. Tolkacheva, Sergey N. Shkerin, Natalia M. Porotnikova, Mikhail Kuznetsov, Sergey Naumov, Sergey Telegin, Anna Khodimchuk, Andrey S. Farlenkov, Maxim Ananyev
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Article
Chemistry, Applied
A. V. Dmitriev, E. V. Vladimirova, M. V. Kandaurov, L. Yu. Buldakova, I. V. Baklanova, M. V. Kuznetsov
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
(2019)